- DENTAL CURABLE COMPOSITION
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PROBLEM TO BE SOLVED: To provide a dental curable composition that comprises a polymerizable monomer, a cured product of which has excellent mechanical strength, and which has low viscosity and excellent handleability even in room temperature environment, and further has excellent operability. SOLUTION: A dental curable composition comprises (A) polymerizable monomer represented by formula (1), (B) polymerization initiator, and (C) organic-inorganic composite filler, where X is a divalent group; Ar1 and Ar2 each are an aromatic; L1 and L2 each are a hydrocarbon with the main chain consisting of 2-60 atoms; R1 and R2 independently represent H or methyl; m1, m2, n1 and n2 independently an integer of 1-3]. SELECTED DRAWING: None COPYRIGHT: (C)2017,JPO&INPIT
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Paragraph 0208
(2017/10/13)
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- DENTAL CURABLE COMPOSITION
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PROBLEM TO BE SOLVED: To provide a dental curable composition that promptly completes polymerization upon light irradiation. SOLUTION: A dental curable composition comprises: (A) a polymerizable monomer represented by general formula (1); and (B) a photoinitiator containing B1) an α-diketone compound, B2) a photoacid generator and B3) an aromatic amine compound. [X is -O-; Ar1 and Ar2 are divalent to tetravalent aromatic groups; L1 and L2 are divalent to tetravalent C2-60 hydrocarbon groups; R1 and R2 are hydrogen or methyl groups; and m1, m2, n1 and n2 are integers from 1 to 3.] SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT
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Paragraph 0207
(2017/11/01)
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- Dental adhesive composition
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PROBLEM TO BE SOLVED: To provide a dental adhesive composition which does not have lower affinity to a tooth or the like and has high adhesive strength. SOLUTION: The present invention relates to the composition comprising a polymerizable monomer represented by general formula (1), and an acid group-containing polymerizable monomer. [X is a divalent group; Ar1 and Ar2 are each independently a divalent to tetravalent aromatic group; L1 and L2 are each independently a divalent to tetravalent hydrocarbon group having 2 to 60 atoms in the main chain; R1 and R2 are each independently H or methyl; or, m1, m2, n1 and n2 are each independently an integer of 1 to 3] SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT
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Paragraph 0261
(2017/10/11)
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- Synthesis and characterization of coronanes: Multicyclopropane-fused macrocyclic arrays
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Stepwise macrocyclization of the all syn-trans-1,15-quinquecyclopropanedimethanol (4) with isoand terephthaloyl chlorides and 4,4′-methanediyl-dibenzoic acid (28) gave the corresponding coronanes 22, 23, and 32. The same protocol was used with all syn-trans-1,21-septecyclopropanedimethanol (5) and 2,3-naphthalenedicarboxylic acid to obtain the macrolide 27. Direct macrocyclization of diol 4 and 1,10-phenanthroline-2,9-dicarbonyl chloride (33) and 2,2′-bipyridine-4,4′-dicarbonyl chloride (35) gave the coronanes 34 and 36, respectively. Ring closing metathesis (RCM) of the diene 42 using Cl2(Cy3P)2Ru=CHPh (48) (Grubbs's catalyst) gave the macrocyclic lactone 45. The structures of coronanes 22, 23, 32, 34, 36, and 45 were confirmed by X-ray crystallographic studies which showed the cyclopropyl chain to adopt very differing conformations throughout the series. Several of the macrocycles have significant free pathways through their ring centers, and in the case of compound 34 there is a water molecule hydrogen bonded within the ring. This latter compound has the potential to act as a chiral ligand to metal centers.
- Barrett,Hamprecht,James,Ohkubo,Procopiou,Toledo,White,Williams
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p. 2187 - 2196
(2007/10/03)
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